“…The anomalies occur through different cellular mechanisms as an increase in cellular apoptosis, stress in the endoplasmic reticulum, oxidative stress, and changes in the expression of time‐specific embryonic genes (Bohuslavova, Skvorova, Cerychova, & Pavlinkova, ; Phelan, Ito, & Loeken, ; Wu et al, ). Although the effects produced by the disrupted mechanisms are temporary and dependent on the maternal hyperglycemia peaks, they can be sufficient to cause permanent and irreversible changes in the fetal morphogenesis due to the changes in gene expression, as if the gene has been mutated or deleted (Bohuslavova et al, ). If a gene is expressed in the mesenchyme of structures such as limb bud, and craniofacial structures, for instance SHH (Sonic Hedgehog) , MSC1 (Meiotic Sex Chromosome Inactivation) , FGF8 (Fibroblast Growth Factor 8), and BMPs (Bone Morphogenetic Proteins), and the disrupted mechanism interferes with the gene expression, the outcome will be morphological changes in both structures (Al‐Qattan, ; Minoux & Rijli, ).…”